[PATCH] gpio: Fix OF build problem on UM

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

The UserMode (UM) Linux build was failing in gpiolib-of as it requires
ioremap()/iounmap() to exist, which is absent from UM. The non-existence
of IO memory is negatively defined as CONFIG_NO_IOMEM so put a reverse
dependency on !NO_IOMEM for OF_GPIO to fix the build.

Cc: stable@xxxxxxxxxxxxxxx
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 drivers/gpio/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 98dd47a30fc7..a6026f2fe7f5 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -50,6 +50,7 @@ config GPIO_DEVRES
 config OF_GPIO
 	def_bool y
 	depends on OF
+	depends on !NO_IOMEM
 
 config GPIO_ACPI
 	def_bool y
-- 
2.7.4

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